Anthrax Inadequacies

According to those undoubted geniuses at the FBI, the anthrax mailer has:
1. Altered physical appearance.
2. Pronounced anxiety.
3. Atypical media interest.
4. Noticeable mood swings.
5. More withdrawn.
6. Unusual level of preoccupation.
7. Unusual absenteeism.
8. Altered sleeping and/or eating habits.

Why do they always seem smarter on TV than in real life?